DET Thermoplastic and Thermosetting Plastics

What is a characteristic of thermoplastics?

• A) They become permanently solid when cooled.

• B) They can be reheated and reshaped.

• C) They are difficult to recycle.

Which has plastic memory?

• Thermoplastic

• Thermosetting Plastic

What is a disadvantage of thermosetting plastics?

• They can be easily reshaped.

• They are not recyclable.

• They are flexible.

• They are biodegradable.

Match the following properties with their descriptions:

• Thermosetting plastics only.

• Heat resistance

• They do not need a protective finish to make them waterproof.

• Water resistant

• Can crack or break or shatter easily, especially if parts are narrow or thin.

• Colour

• Various pigments can be added so plastics are self-coloured.

• Insulator

• Useful where heat or energy is present.

• Brittle

Which of these items would be made from a thermosetting plastic?

• Light switch

• Children's Toy

• Pot handle

• lego brick

Categorise the types of Plastic.

Groups:

(a) Thermoplastic

,

(b) Thermosetting Plastic

• Polypropelene

• ABS

• Urea Formaldehyde

• Acrylic

• Melamine Formaldehyde

• PVC

Select the name of the tool

• Saw

• Tenon Saw

• Coping Saw

• Curve Saw

Select the name of the tool

• engineeers square

• try square

• angle square

• right angle square

Select the name of the tool

• chisel

• sander

• smoother

• file

Select the name of this machine

• Coping Saw

• Hegner saw

• Detail Saw

• Bobbin Saw